Since the “unblocking” on April 8 in Wuhan, 225,999 people have been tested for nucleic acid within a week, and only 130 cases of asymptomatic infections were found, with a detection rate of 0.0575%; none of the asymptomatic infections were transferred to the diagnosis; 542 close contacts were tracked There were no cases transferred to asymptomatic infections, and no cases were transferred to confirmed cases.